Patents by Inventor Osamu Yokota

Osamu Yokota has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11311440
    Abstract: A stationary type caring lift includes a base plate arranged on a floor part at each of head and foot sides of a bed for a care receiver along each short-side side of the bed, four supports erected on the base plates in the vicinity of four corners of the bed, a pair of guide rails supported above the bed by the four supports and arranged in parallel along both long-side sides of the bed, a longitudinally moving body arranged between the guide rails and capable of being moved in a longitudinal direction of the bed while being guided by the guide rails, a slide rail attached movably, a laterally moving body attached movably in the lateral direction of the bed, and a lifting drive mechanism attached in the laterally moving body for hanging down the care receiver and having a worm reduction gear with a self-lock function.
    Type: Grant
    Filed: December 25, 2018
    Date of Patent: April 26, 2022
    Inventor: Osamu Yokota
  • Patent number: 11050401
    Abstract: Technology includes a current sensor that detects electric current flowing through an object. The current sensor includes a magnetic core through which the object is inserted, a coil wound around the magnetic core, a transmission line that transmits electric current supplied from the coil, a terminating resistor that converts electric current from a terminating end of the transmission line into voltage and outputs the voltage, and an impedance matching unit that implements impedance matching between the coil and the terminating resistor. The impedance matching unit raises, to a characteristic impedance of the transmission line, at least one of an impedance viewed from the terminating end of the transmission line toward the terminating resistor and an impedance viewed from a starting end of the transmission line toward the coil, in a band of frequency components involving amplitude attenuation among frequency components of the voltage output from the terminating resistor.
    Type: Grant
    Filed: March 11, 2020
    Date of Patent: June 29, 2021
    Assignee: HIOKI E.E. Corporation
    Inventors: Shogo Toya, Hidekazu Masuda, Osamu Yokota
  • Publication number: 20200295728
    Abstract: A current sensor adapted to detect electric current flowing through an object to be measured includes a magnetic core through which the object to be measured is inserted, a coil wound around the magnetic core, a transmission line adapted to transmit electric current supplied from the coil, a terminating resistor adapted to convert electric current from a terminating end of the transmission line into voltage and outputs the voltage, and an impedance matching unit adapted to implement impedance matching between the coil and the terminating resistor. The impedance matching unit is adapted to raise, to a characteristic impedance of the transmission line, at least one of an impedance viewed from the terminating end of the transmission line toward the terminating resistor and an impedance viewed from a starting end of the transmission line toward the coil, in a band of frequency components involving amplitude attenuation among frequency components of the voltage output from the terminating resistor.
    Type: Application
    Filed: March 11, 2020
    Publication date: September 17, 2020
    Inventors: Shogo TOYA, Hidekazu MASUDA, Osamu YOKOTA
  • Publication number: 20200206052
    Abstract: A stationary type caring lift includes a base plate arranged on a floor part at each of head and foot sides of a bed for a care receiver along each short-side side of the bed, four supports erected on the base plates in the vicinity of four corners of the bed, a pair of guide rails supported above the bed by the four supports and arranged in parallel along both long-side sides of the bed, a longitudinally moving body arranged between the guide rails and capable of being moved in a longitudinal direction of the bed while being guided by the guide rails, a slide rail attached movably, a laterally moving body attached movably in the lateral direction of the bed, and a lifting drive mechanism attached in the laterally moving body for hanging down the care receiver and having a worm reduction gear with a self-lock function.
    Type: Application
    Filed: December 25, 2018
    Publication date: July 2, 2020
    Inventor: Osamu YOKOTA
  • Patent number: 10451656
    Abstract: There is provided a ring-shaped magnetic core that forms a closed magnetic circuit that encloses a measured electrical path, a magneto-electric converter that detects magnetic flux inside the magnetic core and outputs an electrical signal with an amplitude in keeping with a quantity of the magnetic flux, a coil that is formed on the magnetic core and is supplied with a negative feedback current generated based on the electrical signal, and an internal shield member disposed at least in a vicinity of the magneto-electric converter and the coil. A first gap that increases a magnetoresistance of a closed magnetic circuit, which is a closed magnetic circuit for leakage flux that leaks from the magnetic core and includes the internal shield member, a part of the magnetic core where the coil is formed, and the magneto-electric converter, is formed in the internal shield member.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: October 22, 2019
    Assignee: HIOKI DENKI KABUSHIKI KAISHA
    Inventors: Osamu Yokota, Hidekazu Masuda
  • Publication number: 20170336443
    Abstract: There is provided a ring-shaped magnetic core that forms a closed magnetic circuit that encloses a measured electrical path, a magneto-electric converter that detects magnetic flux inside the magnetic core and outputs an electrical signal with an amplitude in keeping with a quantity of the magnetic flux, a coil that is formed on the magnetic core and is supplied with a negative feedback current generated based on the electrical signal, and an internal shield member disposed at least in a vicinity of the magneto-electric converter and the coil. A first gap that increases a magnetoresistance of a closed magnetic circuit, which is a closed magnetic circuit for leakage flux that leaks from the magnetic core and includes the internal shield member, a part of the magnetic core where the coil is formed, and the magneto-electric converter, is formed in the internal shield member.
    Type: Application
    Filed: December 15, 2015
    Publication date: November 23, 2017
    Applicant: HIOKI DENKI KABUSHIKI KAISHA
    Inventors: Osamu YOKOTA, Hidekazu MASUDA
  • Publication number: 20100071129
    Abstract: A bed having a purpose of transferring a care-requiring person lying in bed from the bed, the bed having a structure in which there are provided arranged a main bed and a position adjustment bed supported collectively movably up and down, and a suspending equipment below the main bed, and at a further lower position with an auxiliary bed which makes a swing movement, the main bed having a function of moving-away swing movement, the main bed and the position adjustment bed adjacent thereto each having a sheet with its one end fixed to the adjoining sides of the beds and the other end mounted to a sheet-fixing bar of a swing arm at the main bed side and the position adjustment bed side, the swing arms having a rotation axis near the adjoining parts of the beds.
    Type: Application
    Filed: November 19, 2007
    Publication date: March 25, 2010
    Inventor: Osamu Yokota